The 501-27313 from Quantic Wenzel (Wenzel Associates, Inc.) is a OCXO with Frequency 700 MHz, Supply Voltage 15 V, Output Power 16 dBm, Output Load 50 Ohms, Phase Noise -167 to -88 dBc/Hz. Tags: Module with Connectors, Low G-Sensitivity. More details for 501-27313 can be seen below.